diff -u b/core/lib/Drupal/Core/Config/ConfigInstaller.php b/core/lib/Drupal/Core/Config/ConfigInstaller.php
--- b/core/lib/Drupal/Core/Config/ConfigInstaller.php
+++ b/core/lib/Drupal/Core/Config/ConfigInstaller.php
@@ -55,7 +55,7 @@
   protected $sourceStorage;
 
   /**
-   * ProfileHandler
+   * The profile handler.
    *
    * @var \Drupal\Core\Extension\ProfileHandler
    */
diff -u b/core/lib/Drupal/Core/Config/InstallStorage.php b/core/lib/Drupal/Core/Config/InstallStorage.php
--- b/core/lib/Drupal/Core/Config/InstallStorage.php
+++ b/core/lib/Drupal/Core/Config/InstallStorage.php
@@ -163,7 +163,8 @@
         // @todo Remove as part of https://www.drupal.org/node/2186491
         drupal_get_filename('profile', $profile_name, $extension->getPathname());
       }
-      // Now that we can fetch the path, get dependent profiles and add the extensions
+      // Now that we can fetch the path, get dependent profiles and add
+      // the extensions.
       $profiles = \Drupal::service('profile_handler')->getProfiles();
       foreach ($profiles as $extension) {
         $this->folders += $this->getComponentNames(array($extension));
diff -u b/core/lib/Drupal/Core/Extension/ProfileHandler.php b/core/lib/Drupal/Core/Extension/ProfileHandler.php
--- b/core/lib/Drupal/Core/Extension/ProfileHandler.php
+++ b/core/lib/Drupal/Core/Extension/ProfileHandler.php
@@ -86,9 +86,11 @@
         $extension->weight = $weight;
         $extension->origin = '';
 
-        // See @1356276-192.  Issue in System::_system_rebuild_module_data,
-        // The $extension->info gets changed, so we need to save the original
-        // parse result elsewhere so it can be used to set profile defaults.
+        // Pass needed defaults to info separately so
+        // _system_rebuild_module_data can merge it with the parsed info.
+        // @todo Determine why _system_rebuild_module_data needs freshly
+        // parsed info data and cannot use cached info.  See issue:
+        // https://www.drupal.org/node/1356276#comment-11464109.
         $extension->info_defaults = $info_defaults;
 
         // Add requested profile as last one.
diff -u b/core/modules/system/system.module b/core/modules/system/system.module
--- b/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -990,13 +990,14 @@
   // Read info files for each module.
   foreach ($modules as $key => $module) {
     // Look for the info file.
+    // @todo Determine why we must freshly parse the info array instead of
+    // using any existing $module->info.  See issue:
+    // https://www.drupal.org/node/1356276#comment-11464109.
     $module->info = \Drupal::service('info_parser')->parse($module->getPathname());
     // Add any defaults stored in the extension (see ProfileHandler)
     if (!empty($module->info_defaults)) {
       $module->info = $module->info + $module->info_defaults;
     }
-    else {
-    }
 
     // Add the info file modification time, so it becomes available for
     // contributed modules to use for ordering module lists.